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https://www.readbyqxmd.com/read/28343063/motives-for-illicit-prescription-drug-use-among-university-students-a-systematic-review-and-meta-analysis
#1
REVIEW
Trevor Bennett, Katy Holloway
BACKGROUND: There is a growing body of research on the motives for prescription drug misuse (PDM) among university students. However, the overall findings of this research are hard to decipher. Studies use different methods, they examine different drug types, the motives are phrased in various ways, and the results differ widely. In order to make sense of this body of knowledge, it is necessary to synthesise the results across studies and draw out conclusions. METHODS: The research comprises a systematic review and meta-analysis of studies on the motives of university students for illicit use of four different types of prescription medication (stimulants, analgesics, tranquillisers and sedatives)...
March 23, 2017: International Journal on Drug Policy
https://www.readbyqxmd.com/read/28342769/a-laboratory-study-on-attentional-bias-as-an-underlying-mechanism-affecting-the-link-between-cortisol-and-performance-leading-to-a-discussion-on-the-nature-of-the-stressor-artificial-vs-psychosocial
#2
Franziska Lautenbach
Although cortisol is assumed to influence performance by affecting cognition during stressful and competitive situations, to date this assumption has not been tested empirically. Therefore, the aim of this study was to investigate whether the influence of cortisol on performance is mediated by attentional processing of emotional information. Forty-six male golfers were tested in a mixed design. The cold pressor task (CPT) was used to artificially increase cortisol levels in the experimental group relative to the control group, who had to put their forearm in warm water...
March 22, 2017: Physiology & Behavior
https://www.readbyqxmd.com/read/28342428/revealing-the-influence-of-glucocorticoid-treatment-on-the-excretion-of-anabolic-androgenic-steroids-in-horses-through-in-vitro-digestive-simulations-and-an-in-vivo-case-study
#3
Anneleen Decloedt, Sander Damen, Lynn Vanhaecke
Anabolic-androgenic steroids (AAS) are strictly forbidden in equine sports because of their stimulating effect on muscle growth and performance. Nevertheless, low levels of AAS have been found in some horses, untreated with AAS. Glucocorticoids (GC), used as an anti-inflammatory therapy and structurally related to AAS, might play a role in this phenomenon. In order to unravel this possible correlation the influence of glucocorticoid treatment on the excretion of AAS was studied both in vivo and in vitro. In vivo effects were investigated by analysing urine samples collected from a gelding treated with betamethasone...
February 24, 2017: Research in Veterinary Science
https://www.readbyqxmd.com/read/28338362/the-effects-of-caffeine-taurine-or-caffeine-taurine-co-ingestion-on-repeat-sprint-cycling-performance-and-physiological-responses
#4
Rory Warnock, Owen Jeffries, Stephen Patterson, Mark Waldron
PURPOSE: This study investigated the effects of caffeine (C), taurine (T), caffeine and taurine co-ingestion (C+T) or placebo (P) on repeated Wingate cycling performance and associated physiological responses. METHODS: Seven male team sports players participated in a randomised, single-blind, cross-over study, where they completed three Wingate tests, each separated by 2-min, an hour after ingesting: C (5 mg/kg BM), T (50 mg/kg BM), C+T (5 mg/kg BM + 50 mg/kg BM) or P (5 mg/kg BM) in a gelatine capsule...
March 24, 2017: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/28337944/the-influence-of-gate-start-position-on-physical-performance-and-anxiety-perception-in-expert-bmx-athletes
#5
Franck Di Rienzo, Guillaume Martinent, Lucie Levêque, Tadhg MacIntyre, Christian Collet, Aymeric Guillot
The critical importance of the start phase in bicycle motocross (BMX) racing is increasingly acknowledged. Past experiments underlined that the internal lane of the starting gate provides a strong positional advantage. However, how lane position affects start performance and cognitive and somatic state anxiety remains unexplored. We examined the start performance and anxiety responses of youth national-level BMX riders in both experimental and ecological contexts. We used contextualization motor imagery routines to evaluate start performance and state anxiety from the internal and external lanes...
March 24, 2017: Journal of Sports Sciences
https://www.readbyqxmd.com/read/28337894/actn3-ace-genotypes-and-mitochondrial-genome-in-professional-soccer-players%C3%A2-performance
#6
V Galeandro, A Notarnicola, A Bianco, S Tafuri, L Russo, V Pesce, B Moretti, V Petruzzella
Two nuclear genes, ACTN3, encoding for the α-actinin skeletal muscle isoform 3, and ACE encoding the angiotensin-converting enzyme, have both been associated with quantitative physical performance traits in the general population. The purpose of our study was to assess the association between the two nuclear gene variants, R577X (rs1815739) in ACTN3 and I/D (rs4340) in ACE, with elite athletes’ performance and the effect of training on the mitochondrial DNA (mtDNA) content in peripheral blood. We evaluated the genotypes and frequencies of ACTN3 R577X and ACE I/D polymorphisms between soccer players (n = 43) and healthy non-athletic controls (n = 128)...
January 2017: Journal of Biological Regulators and Homeostatic Agents
https://www.readbyqxmd.com/read/28337149/influence-of-inspiratory-muscle-training-on-ventilatory-efficiency-and-cycling-performance-in-normoxia-and-hypoxia
#7
Eduardo Salazar-Martínez, Hannes Gatterer, Martin Burtscher, José Naranjo Orellana, Alfredo Santalla
The aim of this study was to analyse the influence of inspiratory muscle training (IMT) on ventilatory efficiency, in normoxia and hypoxia, and to investigate the relationship between ventilatory efficiency and cycling performance. Sixteen sport students (23.05 ± 4.7 years; 175.11 ± 7.1 cm; 67.0 ± 19.4 kg; 46.4 ± 8.7 ml·kg(-1)·min(-1)) were randomly assigned to an inspiratory muscle training group (IMTG) and a control group (CG). The IMTG performed two training sessions/day [30 inspiratory breaths, 50% peak inspiratory pressure (Pimax), 5 days/week, 6-weeks]...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28336420/injury-prevention-performance-and-return-to-sport-how-can-science-help
#8
REVIEW
Alison H McGregor
No abstract text is available yet for this article.
March 16, 2017: Chinese Journal of Traumatology, Zhonghua Chuang Shang za Zhi
https://www.readbyqxmd.com/read/28332171/sport-and-male-sexuality
#9
REVIEW
P Sgrò, L Di Luigi
The relationships between sport and sexuality in males are of great social and clinical interest, because of sports and motor activities that highly promote social and sexual relationships. Even if few literature exist, two main questions should be taken into account: whether and how physical exercise and sport positively or negatively influence sexual health and behavior and/or whether and how sexual behavior may affect a sub-sequent sport performance. Physical exercise and sport per se can influence, positively or negatively, the hypothalamic-pituitary-testicular axis function and, consequently, the individual's reproductive and/or sexual health...
March 22, 2017: Journal of Endocrinological Investigation
https://www.readbyqxmd.com/read/28332113/the-critical-power-concept-applications-to-sports-performance-with-a-focus-on-intermittent-high-intensity-exercise
#10
REVIEW
Andrew M Jones, Anni Vanhatalo
The curvilinear relationship between power output and the time for which it can be sustained is a fundamental and well-known feature of high-intensity exercise performance. This relationship 'levels off' at a 'critical power' (CP) that separates power outputs that can be sustained with stable values of, for example, muscle phosphocreatine, blood lactate, and pulmonary oxygen uptake ([Formula: see text]), from power outputs where these variables change continuously with time until their respective minimum and maximum values are reached and exercise intolerance occurs...
March 22, 2017: Sports Medicine
https://www.readbyqxmd.com/read/28332111/practical-issues-in-evidence-based-use-of-performance-supplements-supplement-interactions-repeated-use-and-individual-responses
#11
REVIEW
Louise M Burke
Current sports nutrition guidelines recommend that athletes only take supplements following an evidence-based analysis of their value in supporting training outcomes or competition performance in their specific event. While there is sound evidence to support the use of a few performance supplements under specific scenarios (creatine, beta-alanine, bicarbonate, caffeine, nitrate/beetroot juice and, perhaps, phosphate), there is a lack of information around several issues needed to guide the practical use of these products in competitive sport...
March 22, 2017: Sports Medicine
https://www.readbyqxmd.com/read/28330847/who-owns-the-injury-or-illness-who-owns-performance-applying-systems-thinking-to-integrate-health-and-performance-in-elite-sport
#12
EDITORIAL
Mitchell Mooney, Paula C Charlton, Sadjad Soltanzadeh, Michael K Drew
No abstract text is available yet for this article.
March 22, 2017: British Journal of Sports Medicine
https://www.readbyqxmd.com/read/28328719/predicting-the-maximum-dynamic-strength-in-bench-press-the-high-precision-of-the-bar-velocity-approach
#13
Irineu Loturco, Ronaldo Kobal, José E Moraes, Katia Kitamura, César C Cal Abad, Lucas A Pereira, Fábio Y Nakamura
Loturco, I, Kobal, R, Moraes, JE, Kitamura, K, Cal Abad, CC, Pereira, LA, and Nakamura, FY. Predicting the maximum dynamic strength in bench press: the high precision of the bar velocity approach. J Strength Cond Res 31(4): 1127-1131, 2017-The aim of this study was to determine the force-velocity relationship and test the possibility of determining the 1 repetition maximum (1RM) in "free weight" and Smith machine bench presses. Thirty-six male top-level athletes from 3 different sports were submitted to a standardized 1RM bench press assessment (free weight or Smith machine, in randomized order), following standard procedures encompassing lifts performed at 40-100% of 1RM...
April 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28328717/perceived-sleep-quality-mood-states-and-their-relationship-with-performance-among-brazilian-elite-athletes-during-a-competitive-period
#14
Ricardo Brandt, Guilherme G Bevilacqua, Alexandro Andrade
Brandt, R, Bevilacqua, GG, and Andrade, A. Perceived sleep quality, mood states, and their relationship with performance among Brazilian elite athletes during a competitive period. J Strength Cond Res 31(4): 1033-1039, 2017-We described the perceived sleep quality and mood states of elite athletes during a competitive period, and clarified their relationship to athletes' sport performance. Participants were 576 Brazilian elite athletes (404 men and 172 women) of individual and team sports. Mood states were evaluated using the Brunel Mood Scale, whereas perceived sleep quality was evaluated using a single question ("How would you evaluate the quality of your sleep in the last few days?")...
April 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28328714/somatic-profile-of-the-elite-boulderers-in-poland
#15
Mariusz Ozimek, Marcin Krawczyk, Emilian Zadarko, Zbigniew Barabasz, Tadeusz Ambroży, Arkadiusz Stanula, Dawid K Mucha, Adam Jurczak, Dariusz Mucha
Ozimek, M, Krawczyk, M, Zadarko, E, Barabasz, Z, Ambroży, T, Stanula, A, Mucha, DK, Jurczak, A, and Mucha, D. Somatic profile of the elite boulderers in Poland. J Strength Cond Res 31(4): 963-970, 2017-The study was designed to determine the values of selected somatic characteristics, body proportions, and the somatotype of elite bouldering climbers in Poland and to establish the relationships between the values of the somatic characteristics and climber's performance in bouldering. The study was conducted in a group of elite sport climbers (n = 10) who were ranked by the Polish Mountaineering Association in 2011, 2012, and 2013...
April 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28326947/change-deafness-dual-task-performance-and-domain-specific-expertise
#16
John G Neuhoff, Katharina S Bochtler
In a change deafness manipulation using radio broadcasts of sporting events, we show that change deafness to a switch in talker increases when listeners are asked to monitor both lexical and indexical information for change. We held semantic content constant and demonstrated a change deafness rate of 85% when participants listened to the home team broadcast of a hockey game that switched midway to the away team broadcast with a different announcer. In Study 2 participants were asked to monitor either the indexical characteristics (listen for a change in announcer) or both the indexical and semantic components (listen for a change in announcer or a goal scored)...
March 22, 2017: Quarterly Journal of Experimental Psychology: QJEP
https://www.readbyqxmd.com/read/28325568/prevalence-and-management-of-systemic-hypertension-in-athletes
#17
Stefano Caselli, Antonia Vaquer Sequì, Erika Lemme, Filippo Quattrini, Alberto Milan, Flavio D'Ascenzi, Antonio Spataro, Antonio Pelliccia
The aim of the present study was to evaluate the prevalence, determinants, and clinical management of systemic hypertension in a large cohort of competitive athletes: 2,040 consecutive athletes (aged 25 ± 6 years, 64% men) underwent clinical evaluation including blood test, electrocardiogram, exercise test, echocardiography, and ophthalmic evaluation. Sixty-five athletes (3%) were identified with hypertension (men = 57; 87%) including 5 with a secondary cause (thyroid dysfunction in 3, renal artery stenosis in 1, and drug induced in 1)...
March 1, 2017: American Journal of Cardiology
https://www.readbyqxmd.com/read/28325082/-i-do-like-the-activities-which-i-can-do%C3%A2-leisure-participation-experiences-of-children-with-movement-impairments
#18
Parimala S Kanagasabai, Hilda Mulligan, Leigh A Hale, Brigit Mirfin-Veitch
AIM: To explore in depth the leisure participation experiences of children with movement impairments. METHODS: We used Interpretative Phenomenological Analysis approach to interpret and understand the experiences of 22 children with movement impairments, aged between 6 and 12 years. Children expressed their views through flexible child-centred methods of data collection that allowed the children to draw, paint, use stickers, and demonstrate their leisure activities and equipment while communicating about their experiences...
March 21, 2017: Disability and Rehabilitation
https://www.readbyqxmd.com/read/28324999/surface-electromyography-based-muscle-fatigue-analysis-for-stroke-patients-at-different-brunnstrom-stages
#19
Yinjun Tu, Zhe Zhang, Xudong Gu, Qiang Fang
Muscle fatigue analysis has been an important topic in sport and rehabilitation medicine due to its role in muscle performance evaluation and pathology investigation. This paper proposes a surface electromyography (sEMG) based muscle fatigue analysis approach which was specifically designed for stroke rehabilitation applications. 14 stroke patients from 5 different Brunnstrom recovery stage groups were involved in the experiment and features including median frequency and mean power frequency were extracted from the collected sEMG samples for investigation...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28324986/electrocardiographic-waveforms-fitness-check-device-technique-for-sudden-cardiac-death-risk-screening
#20
O J Escalona, M Mendoza
A novel cardiac health device technique development for reliable, non-invasive and cost-effective heart screening in preventive cardiovascular healthcare is presented. In particular, identification of apparently healthy individuals involved in sports activities (particularly in the young, age <; 35 years) who may be at-risk of sudden-cardiac-death (SCD) is mainly focused here. Nevertheless, the same device technique may be prospectively extended for detecting cardiovascular abnormalities in children and adolescents with type1-diabetes, and also in detecting patients with Brugada syndrome...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
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